With the 300-600mm f/4 DG OS Sports, Sigma has reasserted itself as a major player in the world of super-telephoto zooms. This lens delivers prime-like image quality, fast autofocus, and strong ...

Sigma kicks off CP+ week with the launch of the ... They have also been known for unique offerings, such as the APO 200-500mm f/2.8 EX, which is one of the most specialized designs we have ...

At 28mm, central sharpness is very good all the way through from f/2.8 to f/22. The edges are good at f/2.8, very good from f/4 to f/16 and just fair at f/22. At 35mm, central sharpness is very ...